It isn't bad - but it isn't nice either. I actually like most of her stuff - but with my 'curvy' figure it is unlikely that I will ever be able to wear it.
It looks hideous on a skinny girl! I'm a big girl and there's no way on earth I would venture out in that! (besides I never wear dresses, or skirts so uncomfy!)
Which is why I said all credit to her. All her designs are very simplistic and could only possibly be carried off by stick thins (as a lot of other designers).
If that particular dress were made by a nobody they'd be laughed at.